fix: add LIKE %CUP% search across all tables in debug endpoint

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/routes/debug_fb.py

@@ -23,6 +23,15 @@ async def find_cups(request: Request, user: dict = Depends(get_current_user)):
 
     results = {}
 
+    # 0. Tablas/campos que contengan "CUP"
+    ok0, _, rows0 = fb.execute_query("""
+        SELECT TRIM(f.RDB$RELATION_NAME) AS tabla, TRIM(f.RDB$FIELD_NAME) AS campo
+        FROM RDB$RELATION_FIELDS f
+        WHERE f.RDB$FIELD_NAME LIKE '%CUP%'
+        ORDER BY 1, 2
+    """)
+    results["campos_cup_en_bd"] = rows0 if ok0 else []
+
     # 1. Columnas de ARTICULO
     ok1, err1, rows1 = fb.execute_query("""
         SELECT TRIM(f.RDB$FIELD_NAME) AS campo